Caution Notice: It does not replace the core electronics. Any existing defects of the electronic core will not be fixed by the shell replacement. Please check the appearance and shape of your key and the number of buttons before purchasing, and the applicable model. There is a little error in the size with the original car key, so purchase with caution. Features: Good replacement for a key with broken key case. It is the same buttons and the same key blade (if there is one) as the original one, you can use it as usual after replacing the key case. Function: Protects your car key from scratches and damages effectively. Easy to install, simple and fast. This is a non-OEM product, accessory only! Specifications: Type: Key Case Color: Black Dimension: 6.1x3.1x1.7cm / 2.40"x1.22"x0.67"(L*W*H) Buttons: 3 Key Buttons Materials: Plastic, Metal Key Blade Type: VA2 Key Blade Button Function: Lock Key, Unlock Key, Trunk Hold Key Battery/ Transponder Chip/ Electronic: Not Included Battery Seat: CE0523 Fitment:for Citroen C2 C3 C4 Picasso C5 C6 C8How to Install: Open your existing key. Remove internal components and transfer to the new replacement. Screw/click the key back together. Check if everything is working fine. Package Includes:1 x Key Shell Case (Key Case Only. No Electronic Internals)